Your link has an impassable wall in front of it, making it impossible to read.
Sorry about that:
"Since 2004, our gold products have provided investors a relatively efficient and liquid way to access the gold bullion market through physically-backed ETFs."
The minimum amount to redeem, is, or at least was, 100,000 shares.
OK, so it's not just a futures market. But unless you redeem 1000 ounces, you can't touch it.
I wonder how you redeem it, show up at the vault with stock certificates and trade them? That would be cool to do if you were uber rich.